package/qt5multimedia: fix install with gstreamer 0.10 and QT 5.6

QT 5.6 fails to correctly detect gstreamer support with gstreamer 0.10
as a result libqgsttools_p.so is not built and build fails on:
cp: cannot stat '/home/buildroot/autobuild/run/instance-1/output/host/xtensa-buildroot-linux-uclibc/sysroot/usr/lib/libqgsttools*.so.*': No such file or directory

Fixes:
 - http://autobuild.buildroot.org/results/c88afcd365418e29c89f247d9d887b5f786b0ec8

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/qt5/qt5multimedia/qt5multimedia.mk

@@ -53,7 +53,7 @@ endef
 ifeq ($(BR2_STATIC_LIBS),)
 # since Qt5.10.1 libqgsttools was renamed to libQtMultimediaGstTools
 # and is installed by the default target install step below
-ifeq ($(BR2_PACKAGE_QT5_VERSION_LATEST)x$(BR2_PACKAGE_GST_PLUGINS_BASE)$(BR2_PACKAGE_GST1_PLUGINS_BASE),xy)
+ifeq ($(BR2_PACKAGE_QT5_VERSION_LATEST)x$(BR2_PACKAGE_GST1_PLUGINS_BASE),xy)
 define QT5MULTIMEDIA_INSTALL_TARGET_QGSTTOOLS_LIB
 	cp -dpf $(STAGING_DIR)/usr/lib/libqgsttools*.so.* $(TARGET_DIR)/usr/lib
 endef